Oh, it's Star Wars day?

I'd be more excited about it if George Lucas hadn't clearly demonstrated that he's not interested in catering to our childhood imagination about how it was for us. It's what he wants to do to it again. And again...

But Star Wars as an idea, as a cultural "thing" is cool. To acknowledge this, I point you to a re-creation of a whiteboard sketch I did for my soil science students. Where the tetrahedral lattice of the clay ended up looking like a Jawa sand crawler: